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- W2896564721 abstract "Abstract Autophagy activation improves the phenotype in mdx mice, a Duchenne muscular dystrophy (DMD) model, although the underlying mechanisms are obscure. We previously found that resveratrol, a strong inducer of autophagy, ameliorates the cardiac pathology of mdx mice. Autophagy could eliminate damaged mitochondria, a major source of intracellular reactive oxygen species (ROS), although there is no evidence for mitochondriopathy in dystrophic cardiomyopathy. To elucidate resveratrol’s function, we investigated the deletion of mitochondrial DNA (mtDNA), autophagy of damaged mitochondria (mitophagy), and ROS accumulation in the mdx mouse heart. Low levels of normal mtDNA and abnormal accumulations of mitochondria-containing autophagosomes were found in the mdx mouse heart. Administering resveratrol to mdx mice for 56 weeks ameliorated the cardiomyopathy, with significant reductions in the amount of mtDNA deletion, the number of mitochondria-containing autophagosomes, and the ROS levels. Resveratrol induced nuclear FoxO3a accumulation and the expression of autophagy-related genes, which are targets of FoxOs. The most effective dose in mdx mice was 0.4 g resveratrol/kg food. In conclusion, resveratrol improved cardiomyopathy by promoting mitophagy in the mdx mouse heart. We propose that acquired mitochondriopathy worsens the pathology of DMD and is a potential therapeutic target for the cardiomyopathy in DMD patients." @default.
- W2896564721 created "2018-10-26" @default.
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- W2896564721 date "2018-10-22" @default.
- W2896564721 modified "2023-10-14" @default.
- W2896564721 title "Resveratrol Ameliorates Mitophagy Disturbance and Improves Cardiac Pathophysiology of Dystrophin-deficient mdx Mice" @default.
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- W2896564721 doi "https://doi.org/10.1038/s41598-018-33930-w" @default.
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